From fac554a1317bf32daf5698740670025ae14e6bcc Mon Sep 17 00:00:00 2001 From: Nick Lewycky Date: Sun, 29 Nov 2009 21:40:55 +0000 Subject: Teach ConstantFolding to do a better job when folding gep(bitcast). This permits the devirtualization of llvm.org/PR3100#c9 when compiled by clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90099 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/ConstantFolding.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'lib') diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp index 8d60907f8c..96f738edad 100644 --- a/lib/Analysis/ConstantFolding.cpp +++ b/lib/Analysis/ConstantFolding.cpp @@ -564,6 +564,7 @@ static Constant *SymbolicallyEvaluateGEP(Constant *const *Ops, unsigned NumOps, // we eliminate over-indexing of the notional static type array bounds. // This makes it easy to determine if the getelementptr is "inbounds". // Also, this helps GlobalOpt do SROA on GlobalVariables. + Ptr = cast(Ptr->stripPointerCasts()); const Type *Ty = Ptr->getType(); SmallVector NewIdxs; do { -- cgit v1.2.3